On average, listings lease in the $20's per square foot per year. The Spring Valley submarket is going through a decline in rates. In the last 3 months, the median rate fell $2 per sqft per year. That's a 9% decrease in rent.
Compared to the rest of the Las Vegas–Henderson–Paradise market, the Spring Valley region has lower rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 46 listings have been listed, so you'll want to check back regularly for new listings. About 7% of the listings in the Spring Valley are subleases, so you will probably have to consider a longer term lease. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
Even though the median size is 2,530 sqft, there are still 0 leases below 2,000 sqft. Most properties in this area are around 2 floors. Most buildings in this market were built in 2005 and are Class B.